Dry cleaning apparatus



Jan. 26, 1965 zAcKs f DRY CLEANING APPARATUS Filed Sept. l2, 1963 m mm.n A L ,E U O L4 H O O l 2 O 2 @m.. mm A im L L 8 2 Jan. 26, 1965 l..zAcKs 3,166,923

DRY CLEANING APPARATUS Filed Sept. 12, 1963 2 Sheets-Sheet 2 ([38 L\ XTXx YN fd i m l ,37 RIJ-f INVEIWUR LOUIS ZACKS United States Patent Officeaimais Patented Jan. 26, i965 3,166,923 vDRY CLEANING APPARATUS LouisZacks, Vancouver, British Columbia, Canada, as-

signor to Zaclrs Limited, Vancouver, British Columbia, Canada, acorporation of British Columbia Filed Sept. 12, 1963, Ser. No. 309,37116 Claims. (CL 68-5) This is a continuation-in-part application fromapplication Serial No. 145,093, filed October 16, 1961, now abandoned.

This invention relates to apparatus for dry cleaning, and particularlyfor dry cleaning in homes or residences.

Hitherto it has been the common practice in the dry cleaning art Itoimmerse the articles to be cleaned in a suitable dry cleaning medium inliquid form or to spray the articles with the liquid cleaning medium.These methods, however, involve considerable wastage of the cleaningmedium, necessitate a comparatively long drying operation since thearticles are more or less saturated with the cleaning medium and thearticles are usually considerably wrinkled with the result that thearticles must be pressed before they can be used. Also, the cleaningmediums employed heretofore have been more or less inflammable and/ortoxic when used in large quantities as in the immersion or sprayingprocess, the cleaning operation is usually accompanied by noxiousodours.

The present invention avoids the drawbacks and disadvantages inherent inthe prior art fand contemplates apparatus for dry cleaning in which thearticles to be cleaned are positioned Within a flexible vapor-proofcabinet and treated with cleaning fluid in vapor form, the vaporizedcleaning fluid being continuously circulated under pressurearound theinterior of the cabinet and through the pores of the material from whichthe articles are made whilst the cabinet is preferably simultaneouslygently vibrated. During this circulation of the cleaning fluid it isdirected through a filter in order to remove the soil or dirt therefrom.At the end of the cleaning period the cleaning fluid is exhausted fromthe cabinet and air is thereafter circulated through the cabinet to drythe articles. In a preferred form of the invention, the vapor is passedthrough a condenser and reclaimer so that it may be used for manycleaning operations. The cleaning fluid employed in this apparatus is ahighly volatile fluo-carbon compound of extremely low toxicity ascompared to the cleaning agents commonly used heretofore and iscompletely non-flammable. The dry cleaning operation according to thisinvention which is carried out within a sealed cabinet, is completelyodourless, no heat is required to evaporate the cleaning fluid due toits high volatility, no wrinkling of the articles occurs during the drycleaning operation and since the articles are not saturated withcleaning fluid, the drying time is materially reduced. In addition tothis, the cleaning vapor is condensed and reclaimed for further use.

Objects of the invention are to provide apparatus for drycleaningarticles which requires a minimum amount of cleaning fluid, in which thecleaning fluid is vaporized and circulated under pressure around andthrough the pores of the fabrics from which the articles are made,whichrequires a comparatively short drying period, and

which is not accompanied by any undesirable odours, fire FIGURE 2 is aside elevational view of the apparatus,

FIGURE 3 is a sectional view taken on the line 3-3 of FIGURE l,

FIGURE 4 is a sectional view taken on the line 4 4 of FIGURE 1,

FIGURE 5 is a view similar to FIGURE 3, illustrating an alternative formof dry cleaning apparatus,

v FIGURE 6 is an enlarged fragmentary sectiony taken on the line 6-6 ofFIGURE 5, and

FIGURE 7 is a side elevation of the apparatus of FIGURE 5.

Referring to the drawings, the apparatus includes a hollow generallyrectangular cabinet 1f) having front and back walls 12 and i4, a base16, a top 18 and side walls 2.@ and 22. Side wall 20 is provided with anaccess flap 24 adapted to be closed by means of a zipper 26. The

cabinet 1f) is preferably made of a heavy flexible or pliable plasticmaterial, such as sheet polyvinyl chloride. An exhaust port 2S is formedin the back wall 14 of cabinet lil adjacent the lower end thereof and aninlet por-t 3@ is formed in the top 18 of cabinet l0. A shelf 32 made ofcoarse mesh screen material is mounted within cabinet it) and extendstransversely thereof and is spaced a little from the top 1S of thecabinet.

A lter unit generally designated 34 is adapted lto be removably insertedwithin cabinet l@ through the flap 24 and is supported by shelf 32. Thefilter unit 34 may be of any suitable design, but as shown consists of alayer of filtering material 36, such asvdiatomaceous earth combined withactivated carbon, sandwiched between two outer layers 3S and til ofporous material, such as sponge rubber. While shelf 32 and filter unit3e are shown at the top of cabinet ttl, it is obvious that the shelfcould be spaced above bottom 16 andthe filter unit placed on said bottomover exhaust port 28.

A cleaning fluid container which preferably consists of a plasticsqueeze bottle 42A having a bubble-type seal is mounted on the inside ofcabinet lll in a corner thereof with its neck 44 connected to one end ofa tube i6 which terminates at its other end in a nozzle i3 positionedwithin, or below the filter unit 34. In this example, tube 46 kandnozzle 4S are located above the lter unit.

A reinforcing panel Sil is secured to the inner surface. of top f8 ofthe cabinet, and a motor 54 is mounted lon a bracket S2 secured to thetop of cabinet lll over panel 5ft. A fan 56 is connected to the upperend of the shaft 58 of motor 54 and a vibrator pad @il is mounted on theother end of shaft 58. The vibrator pad e@ is rigidly bonded to the topof cabinet ltl'and with the motor'in operation is effective to impartagentle vibratory motion to the entire cabinet. In some applications itmaybe desirable to impart a more vigorous vibration to the cabinet toimprove the cleaning action and in such cases a'further vibrator unitmay be connected to the bottom of the cabinet to supplement the actionof vibrator pad 6ft. lThe fan 56 is totally enclosed in a housing 62 andan outlet pipe 64- connected at one end to housing 62 communicates atits other end with the interior of cabinet llt) through inlet port 30.An intake pipe 6e extends from fan heus? ing 62 and opens into a pipe 68extending longitudinally of container l@ from eaust port 23. A vent pipe7i) communicates atone end with pipe 66 and is open to atmosphere at itsother end. Suitable valves 72 and 74 are positioned within pipes e8 and76 respectively, to con-` trol the fluid flow therethrough. These valvesmay be of any suitable design and, as shown, consist of individuallymanually operated butterlly valves, although if desired they may bemechanically interlinked for conjoint operation or may be solenoidoperated valves for automatic operation in accordance with apredetermined programl de-energized and the apparatus comes to rest.

9 The cabinet 10 is normally designed to be suspended from a suitablesupport tixture and for this purpose a pair of hangers 76 and '73 aresecured to bracket 52. If

desired, however, the cabinet 16 may be mounted on a shelf or'othersupport stand and in some applications the cabinet may itself form acloset for permanent installation in a home or commercial establishment.

The articles to be cleaned, such as garments Si), are adapted to besuspended Within the cabinet and for this purpose there is provided arod 82 mounted at either end in brackets S4 and 86 secured to the frontand back walls 12 and 14 respectively of the cabinet. The garments maythen be suspended from rod 82 by means of the conventional hangers 88.

The motor 54, which is preferably an electric motor, is connected to asource of electrical power in series with a conventional timer devicedesignated di?, and its operation is initiated and controlled by thetimer device 99.

In operation of the apparatus, the flap 24 is opened and the garments tobe cleaned are placed within the -cabinet on the hangers S8. Cleaningfluid container 42 is charged with a suitable cleaning iiuid.Thereafter, iiap 24 is closed by means of zipper 26 and a sealingVmember 92 which preferably consists of one of the so-called zipperlesszippers is placed over the ap closure zipper 26 to form a completelyvapor-proof seal for the cabinet. The cleaning fluid employed ispreferably a highly volatile lino-carbon compound, such as the compoundmarketed under the trade name Val- Clene by DuPont of Canada Limited.During the cleaning cycle, valves 72 and 74 are closed, thereby forminga closed circuit from the fan Ithrough pipe 64 to the top of cabinet 1liand from the bottom of cabinet 10 through pipe 68 back to the fan. Thetimer device 9u is then adjusted for the desired length of cleaningcycle and energized to start the motor 54. Container 42 is then squeezedby compressing the adjacent sides of cabinet 1t), thereby to break itsbubble seal and the cleaning compound is injected into the lter unit 34.As the lter unit becomes saturated, very small droplets of the cleaningfluid Aare distributed across the Whole width of cabinet 10 and becauseof the high volatility of the cleaning compound, these droplets areimmediately vaporized ."to form a dense cloud of vaporized duo-carbonycleaning compound. With the motor 54 energized, fan

55 is operative and the vibrator is effective to vibrate cabinet 1t? andwith it the vapor-laden air therewithin. Thecloud of iluo-carbon vaporwhich acts as the cleaning agent is driven under pressure downwardlythrough the cabinet by means of the current of air from the fan. Inpassing down through the cabinet, the vapor-laden air is driven throughthe garments to be cleaned and the tiny molecules of vapor pass throughthe pores of the fabrics from which the articles are made and incombination with the gentle vibratory action imparted to thevapor-ladenV airy is effective to remove soil and other foreign matterfrom the garments. After passing through the' cabinet, the vapor passesupwardly through pipe '68 and 66 into the fan housing 62 and may then bere-cycled through the apparatus. At this time, of course, thevapor-laden air holds in suspension the foreign matter removed from thegarments and prior to its further passage through the garments itspasses through lilter unit 34 which is effective to remove substantiallyall of the foreign matter suspended therein as it is removed from thegarments being cleaned. The air and cleaning vapor mixture may berecirculated through the container and garmetns for any desired numberof cycles or period of times which may be predetermined and the timerdevice 9d) is adjusted so that when the selected period has elapsed, themotor is automatically Thereafter, valves 72 and '74 are opened,whereupon the moto-r is again energized andV the apparatus commences thedryingcycle. In the drying cycle, fresh air is drawn into the fanhousing from the atmosphere through pipe 79, and is driven downwardlythrough the cabinet and upwardly through pipe 68 and discharged toatmosphere. This is initially effective to discharge the vapor-laden airfrom the cabinet and thereafter a continuous stream of fresh air isdriven through the cabinet and the garments to dry the latter. The timerdevice is eifective after a predetermined and adjustable drying periodto de-energize the motor. Thereafter, the sealing member 92 is removed,the zipper 26 opened and the cleaned and dried garments may be removedfrom the cabinet through side iiap 24. The garments upon removal fromthe cabinet are substantially completely Wrinkle free and are ready tobe worn Without pressing.

Periodically and as necessary, the cleaning fluid container must berefilled or replaced and the lter unit removed and either reactivated orrenewed prior to reinsertion in the cabinet to ready the apparatus forfurther use.

If desired .a suitable heater, preferably an electric heater, may beincorporated in the fan unit and adapted to be energized during thedrying cycle whereby a continuous stream of hot air is driven throughthe garments to expedite the drying process.

FlGURES 5 to 7 illustrate an alternative form of dry cleaning apparatus10d. This is substantially the same as the apparatus described above,excepting that the cleaning fluid is directed into a cabinet 102 in adifferent .mannen said cabinet preferably being formed of a pliablematerial. Apparatus 10i) has a similar circulating system, and includesa pipe 105 extending from an exhaust port 164 at the bottom of cabinet102 up to a pipe 106 communicating with the casing of a fan 197, saidfan being driven up by an electric motor 198. Air from the fan isdirected through pipes and 111 into the top of cabinet 102. A pipe 114is connected to the upper end of pipe 105 and extends upwardly abovepipe 1%, said pipe 115 having a control valve 115 therein. A vent pipe118 is connected to pipe 166 and includes a control valve 119 mountedtherein, Motor 108 not only drives fan 167, but it operates a vibratorpad 122 secured to the top of pliable cabinet 102.

A lter unit is provided in cabinet 102, and this may be at the top ofthe cabinet, as in the previously-described form of the invention, or aunit 125, similar to unit 34, may be placed at the bottom of the cabinetover exhaust port 106.

The parts of apparatus 100 described so far function in the same manneras the corresponding parts in the' apparatus of FIGURES 1 toA 3, thatis, a cleaning fluid in vapor form is circulated through articles 127supported in cabinet 102 for a suitable time. Then the valves of theapparatus are adjusted so that air is circulated through the articles inthe cabinet during a drying stage.

Apparatus 100 includes a container 130 for clean ing fluid. Thiscontainer is shown outside cabinet 1&2, but it is to be understood thatit may be mounted inside the cabinet with a ller opening projectingoutwardly through a wall thereof. Container 130 has a normally closedller tube 132 opening into the top thereof. The container is providedwith an air inlet tube 133 having an inwardly-opening valve thereinwhich may be similar to the valve used in the stem of the tube of apneumatic tire. If an air pressure system is available, a hose therefrommay be connected to tube 133 to direct air into container 139. lf an airpressure system is not available, then an air bottle 134 is used forthis purpose. This bottle is the type which is carried by many motoriststo be used if a tire loses air some place Where air under pressure isnot available. These bottles are readily filled at any sources o-f airpressure. Bottle 134 is adapted to be screwed on to tube 133, and whenthis is done, valves in this tube and in the outlet of the bottle areopened so that air under pressure is discharged from the bottle intocontainer 130.

A pipe 136 extends upwardly from near the bottom of container 130, seeFIGURE 5, through the top thereof and into cabinet 102. This pipe isconnected to a pair of pipes 137 which extend in opposite directionsalong the bottom of the cabinet and up the front and back Walls thereof.Each pipe 137 communicates with a plurality' of laterally-extendingbranch pipes 138, each having nozzles 139 extending away therefrom anddirected generally towards the vertical central plane of the cabinet.

In order to force solvent out of container 130, air under pressure frombottle 134 is directed into the container, and this forces the fluidthrough pipe 136 into the two pipes 137 and their respective branchpipes 138. This forces the solvent uid out through nozzles 139 whichdirect it in atomized form towards the articles hanging in cabinet 102.When fan 107 is in operation, it draws the cleaning vapor through filterunit 125, where it is cleaned, through pipes 105 and 106, and directsthe vapor back into the cabinet through pipes 110 and 111. Thiscirculation of the cleaning vapor may be continued for any suitablelength of time, and if desired, the apparatus may include an automatictimer for operating the control switch of motor 108.

After this cleaning operation has been completed, valves 115 and 119 areoperated to cause fan 107 to circulate air through the articles incabinet 102. This would result in the solvent vapor being discharged toatmosphere. However, as solvents of the type used in this apparatus arevery expensive, it is desirable to save the cleaning fluid for furtheruse. For'this purpose, a vapor condenser reclaimer unit 145 has beenprovided. Units of this type are known in the industry, and no specialdescription is required herein. This unit cools and condenses thecleaning vapor. Unit 145 is connected by a pipe 146 to pipe 110, andsaid pipe 146 has a control Valve 147 therein. It is desirable toprovide another control valve 149 in pipe 111. By the manipulation ofvalves 147 and 149, the output of fan 107 may be directed either intocabinet 102 or to unit 145. Another pipe 150 extends from unit 145 backto fluid container 133.

After the cleaning cycle in apparatus 100 has been completed, valve 149is closed, and valve 147 opened so that fan 107 directs the cleaningvapor through pipe 146 into the condenser reclaimer unit 145, and thecondensed liquid travels from this unit through pipe 150 back tocontainer 130. Once all the vapor has been cleared out of the system,valve 147 is closed and Valves 149, 115 and 119 are opened. This allowsfan 107 to circulate air entering through pipe 118 through the articlesin cabinet 102 and out through pipes 105 and 114. This airing cycle iscontinued as long as necessary, and it is stopped either manually orautomatically.

What I claim as my invention is:

l. Apparatus for dry cleaning articles in residences comprising avapor-proof pliable cabinet, means for supporting articles within saidcabinet, means for injecting atomized cleaning fluid into said cabinet,means connected to said cabinet operable to impart a vibratory motionthereto, means adapted to circulate said cleaning iiuid under pressureand in vapor form throughout the cabinet and articles therein, andexhaust means for selectively evacuating spent cleaning fluid from saidcabinet.

2. Apparatus for dry cleaning articles in residences comprising avapor-proof exible cabinet, means for supporting articles within saidcabinet, means for injecting atomized cleaning fluid into said cabinet,means connected to said cabinet operable to impart a vibratory motionthereto, means adapted to circulate said cleaning fluid under pressurein vapor form throughout the cabinet and articles therein, a lter unitwithin the cabinet located so that all the circulating iiuid passesthrough said unit, and exhaust means for selectively evacuating spentcleaning fluid from said cabinet.

3. Apparatus for dry cleaning articles in residences comprising avapor-proof cabinet, means for supporting articles within said cabinet,a iilter unit within the cabinet, means for injecting cleaning iiuidinto said cabinet suhstantially to impregnate said iilter unit, saidcleaning iiuid vbeing adapted to vaporize substantially instantaneouslyupon introduction into said cabinet, means adapted to circulate thevaporized cleaning uid throughout the cabinet and articles therein, saidlter unit being located so that all cleaning iiuid vapor passes throughsaid unit, and exhaust means for selectively evacuating spent cleaningiiuid from said cabinet.

4. Apparatus for dry cleaning articles in residences comprising avapor-proof cabinet, means for supporting articles within said cabinet,a lter unit within the cabinet, means for injecting cleaning fluid intosaid cabinet substantially to impregnate said filter unit, said cleaningiiuid being adapted to Vaporize substantially instantaneously uponintroduction into said cabinet, means adapted to circulate the vaporizedcleaning fluid throughout the cabinet and articles therein, said filterunit being located so that all cleaning iluid vapor passes through `saidunit, means connected to said cabinet operable to impart a vibratorymotion thereto, and exhaust means for selectively evacuating spentcleaning fluid from said cabinet.

5. Apparatus for dry cleaning articles in residences comprising avapor-proof cabinet, means for supporting articles within said cabinet,means for injecting cleaning fluid into said cabinet, said cleaningiiuid being adapted to vaporize substantially instantaneously uponintroduction into said cabinet, a pressure circulating system for thecabinet, means for closing said system to circulate said vapor througharticles in the cabinet, a iilter unit Within the cabinet located sothat all the circulating fluid passes through said unit, said iilterunit being adapted to remove foreign matter collected by said cleaningfluid from said articles, and means for opening said system toatmosphereto circulateair through the articles for drying purposes.

6. Apparatus for dry cleaning articles in residences comprising apliable vapor-proof container, means for supporting articles within saidcontainer, means for injecting vaporized cleaning fluid into saidcontainer, said cleaning fluid being adapted to vaporize substantiallyinstantaneously upon introduction into the container, a motor mounted onsaid container, a vibratory unit secured to the container and coupled tosaid motor, said vibratory unit being operable to vibrate saidcontainer, a fan coupled to said motor and operable thereby selectivelyto drive air or cleaning fluid through the container, a iilter unit inthe container located so that all the cleaning uid passes through saidtilter unit, and exhaust means for evacuating spent cleaning iiuid fromsaid container.

7. Apparatus for dry cleaning articles in residences comprising avapor-proof cabinet, means for supporting articles within said cabinet,a circulating system of which said cabinet forms part, pipe meansforming part of said system and extending from one part of the cabinetdirectly to another part thereof, means for injecting cleaning fluid invapor form into said lcirculating system, pressure generating means insaid system for continuously moving cleaning fluid vapor therethroughunder pressure continuously to circulate said vapor under pressurethrough the articles within the cabinet, and iilter means in said systempositioned so that the circulating vapor passes through the ilter means,said filter means being adapted to remove from the vapor during movementthereof through said system foreign matter collected by said vapor fromthe articles in the cabinet.

8. Apparatus as claimed in claim 7 including means connected to saidcabinet operable to impart vibratory motion thereto while cleaning vaporis being moved therethrough.

9. Apparatus as claimed in claim 7 in which the cabinet is formed withat least one pliable wall, and the means for injecting cleaning fluidinto the circulatory system comprises a squeeze-bottle container mountedin the cabinet adjacent said pliable Wall and containing a volatilecleaning iluid, said container on being squeezed being adapted to ejectcleaning iluid therefrom in vapor form.

l0. Apparatus for dry cleaning articles in residences comprising avapor-proof pliable, cabinet, means for supporting articles within saidcabinet, a squeeze-bottle container mounted in the cabinet adjacent aWall thereof and containing a volatile cleaning iiuid, said container onbeing squeezed being adapted to eject cleaning fluid therefrom inatomized form, a pressure circulating sys tem for the cabinet, means forclosing said system to circulate said vapor through articles in thecabinet, means attached to the cabinet for imparting a vibratory motionthereto and to articles therein, and means for opening said system toatmosphere to circulate air through the articles for drying purposes.

11.Appar`atus for dry cleaning articles in residences comprising avapor-proof cabinet, means for supporting articles Within said cabinet,a circulating system of which said cabinet forms part, pipe meansforming part of said system and extending from one part of the cabinetdirectly to another part thereof, a container for holding a volatilecleaning fluid in liquid form and connected by pipe means to thecabinet, pressure means connected to said container operable to forcecleaning fluid in vapor form into the cabinet, a vapor condenser andreclaimer unit connected to said container, fan means in saidcirculatory system and connected to said unit, valve means forselectively causing said fan means to direct cleaning iiuid vaporthrough said circulating system to circulate vapor under pressurethrough the articles Within the cabinet or to direct said vapor throughthe condenser and reclaimer unit and to said container, and lter meansin said system positioned so that the circulating vapor passes throughthe Vilter means, said lter means being adapted to remove from the vaporduring movement thereof through said system foreign matter collected bysaid vapor from the articles in the cabinet.

k12. Apparatus as claimed in claim 1l in which the pipe means from thecontainer to the cabinet is connected to a plurality of nozzles in thecabinet positioned to direct cleaning fluid vapor on to articlessupported in said cabinet.

13. Apparatus as claimed in claim 11 in which the pressure meansconnected to the container comprises a pressureV air bottle removablyconnected to a valvecontrolled inlet for said container.

14. Apparatus as claimed in claim 11 including an inlet and an outlet insaid circulatory system,.valve means in the inlet and outlet normallyclosing said inlet and outlet and operable to open the inlet and outletto permit air to be moved through and out of the circulatory system bysaid fan means.

15. Apparatus for dry cleaning articles in residences comprising avapor-proof cabinet, means for supporting articles within said cabinet,a container for cleaning uid at the cabinet, a pipe system for thecabinet and extending from the container, a plurality of nozzles in thepipe system positioned to direct cleaning fluid in vapor form on toarticles in the cabinet, means for applying uid pressure to fluid in thecontainer to force said liuid through the pipe system and out throughsaid nozzles, a pressure circulating system for the cabinet, means forclosing said system to circulate said vapor through articles in thecabinet, a filter unit in the cabinet positioned so that all thecirculating power passes therethrough, said lter unit removing dirt fromthe vapor, and means for opening said system to atmosphere to circulateair through the articles for drying purposes.

16. Apparatus for dry cleaning articles in residences comprising apliable vapor-proof cabinet, means for supporting articles within saidcabinet, a container for a cleaning iiuid at the cabinet, a pipe systemfor the cabinet and extending from the container, a plurality of nozzlesin the pipe system positioned to direct cleaning iiuid in vapor form onto articles in the cabinet, means for applying fluid pressure to uid inthe container to force said iiuid through the pipe system and outthrough said nozzles, a pressure circulating system for the cabinet,means for closing said system to circulate said vapor through articlesin the cabine-t, means at the cabinet for imparting a vibratory motionthereto and to articles therein, and means for opening said system toatmosphere to circulate air through the articles for drying purposes.

References Cited by the Examiner UNITED STATES PATENTS 446,050 2/ 91Young 68-207 1,242,824 10/ 17 Lindsay. 1,947,174 2/34 Salido 68-182,084,688 6/37 Johnson 68-l8 2,633,009 3 5 3 Steverlynck 68-207 X2,845,786 8/58 Crisman 68--18 2,964,770 12/60 Lerner 15-541 FOREIGNPATENTS 825,131 lli/37 France. 1,077,541 5/54 France.

630,614 10/ 49 Great Britain.

WALTER A. SCHEEL, Primary Examiner.

. BUNEVICH, Examiner.

1. APPARATUS FOR DRY CLEANING ARTICLES IN RESIDENCES COMPRISING AVAPOR-PROOF PLIABLE CABINET, MEANS FOR SUPPORTING ARTICLES WITHIN SAIDCABINET, MEANS FOR INJECTING ATOMIZED CLEANING FLUID INTO SAID CABINET,MEANS CONNECTED TO SAID CABINET OPERABLE TO IMPART A VIBRATORY MOTIONTHERETO, MEANS ADAPTED TO CIRCULATE SAID CLEANING FLUID UNDER PRESSUREAND IN VAPOR FORM THROUGHOUT THE